年产5.5万吨环氧乙烷乙二醇车间环氧乙烷合成工段工艺设计

1、年产5.5万吨环氧乙烷/乙二醇车间环氧乙烷合成工段工艺设计my dentist had just pulled out one of my teeth and had told me to rest for a while. i tried to say something, but my mouth was full of cotton-wool. he knew i collected birds' eggs and asked me whether my collection was growing. he then asked me how my brother was and

2、 whether i liked my new job in london. in answer to these questions i either nodded or made strange noises. meanwhile, my tongue was busy searching out the hole where the tooth had been. i suddenly felt very worried, but could not say anything. when the dentist at last removed the cotton-wool from m

3、y mouth, i was able to tell him that he had pulled out the wrong tooth.    lesson49 the end of a dream 美梦告终 tired of sleeping on the floor, a young man in teheran saved up for years to buy a real bed. for the first time in his life, he became the proud owner of a bed which had sp

4、rings and a mattress. because the weather was very hot, he carried the bed on to the roof of his house. he slept very well for the first two nights, but on the third night, a storm blew up. a gust of wind swept the bed off the roof and sent it crashing into the courtyard below. the young man did not

5、 wake up until the bed had struck the ground. although the bed was smashed to pieces, the man was miraculously unhurt. when he woke up, he was still on the mattress. glancing at the bits of wood and metal that lay around him, the man sadly picked up the mattress and carried it into his house. after

6、he  had put it on the floor, he promptly went to sleep again.   lesson50 taken for a ride 乘车兜风 i love travelling in the country, but i don't like losing my way. i went on an excursion recently, but my trip took me longer than i expected.  ' i'm going to wood

7、ford green,' i said to the conductor as i got on the bus,' but i don't know where it is.' ' i'll tell you where to get off,' answered the conductor.  i sat in the front of the bus to get a good view of the countryside. after some time, the bus stopped. looking round,

8、 i realized with a shock that i was the only passenger left on the bus.  ' you'll have to get off here,' the conductor said. 'this is as far as we go.' ' is this woodford green ?' i asked. 'oh dear,' said the conductor suddenly.' i forgot to put you

9、off.' 'it doesn't matter,' i said. 'i'll get off here.' 'we are going back now,' said the conductor. 'well, in that case, i prefer to stay on the bus,' i answered.   lesson51 reward for virtue 对美德的奖赏 my friend, herbert, has always been

10、fat, but things got so bad recently that he decided to go on a diet. he began his diet a week ago. first of all, he wrote out a long list of all the foods which were forbidden. the list included most of the things herbert loves: butter, potatoes, rice, beer, milk, chocolate, and sweets. yesterday i

11、paid him a visit. i rang the bell and was not surprised to see that herbert was still as fat as ever. he led me into his room and hurriedly hid a large parcel under his desk. it was obvious that he was very embarrassed. when i asked him what he was doing, he smiled guiltily and then put the parcel o

12、n the desk. he explained that his diet was so strict that he had to reward himself occasionally. then he showed me the contents of the parcel. it contained five large bars of chocolate and three bags of sweets!    lesson52 a pretty carpet 漂亮的地毯 we have just moved into a new house

13、 and i have been working hard all morning. i have been trying to get my new room in order. this has not been easy because i own over a thousand books. to make matters worse, the room is rather small, so i have temporarily put my books on the floor. at the moment, they cover every inch of floor space

14、 and i actually have to walk on them to get in or out of the room. a short while ago, my sister helped me to carry one of my old bookcases up the stairs. she went into my room and got a big surprise when she saw all those books on the floor. 'this is the prettiest carpet i have ever seen,' s

15、he said. she gazed at it for some time then added, 'you don't need bookcases at all. you can sit here in your spare time and read the carpet!'    lesson53 hot snake 触电的蛇 at last firemen have put out a big forest fire in california. since then, they have been trying to

16、 find out how the fire began. forest fire are often caused by broken glass or by cigarette ends which people carelessly throw away. yesterday the firemen examined the ground carefully, but were not able to find any broken glass. they were also quite sure that a cigarette end did not start the fire.

17、this morning, however, a fireman accidentally discovered the cause. he noticed the remains of a snake which was wound round the electric wires of a 16,000-volt power line. in this way, he was able to solve the mystery. the explanation was simple but very unusual. a bird had snatched up the snake fro

18、m the ground and then dropped it on to the wires. the snake then wound itself round the wires. when it did so, it sent sparks down to the ground and these immediately started a fire.   lesson54 sticky fingers 粘糊的手指 after breakfast, i sent the children to school and then i went to

19、 market. it was still early when i returned home. the children were at school, my husband was at work and the house was quiet. so i decided to make some tarts for tea. in a short time i was busy mixing butter and flour and my hands were soon covered with sticky pastry. at exactly that moment, the te

20、lephone rang. nothing could have been more annoying. i picked up the receiver between two sticky fingers and was dismayed when i recognized the voice of mrs bates. it took me ten minutes to persuade her to ring back later. at last i hung up the receiver. what a mess! there was pastry on my fingers,

21、on the telephone, and on the door-knobs. i had no sooner got back to the kitchen than the door-bell rang loud enough to wake the dead. this time it was the postman and he wanted me to sign for a registered letter !   lesson55 not a gold mine 并非金矿 dreams of finding lost treasure a

22、lmost came true recently. a new machine called 'the revealer' has been invented and it has been used to detect gold which has been buried in the ground. the machine was used in a cave near the seashore where-it is said-pirates used to hide gold. the pirates would often bury gold in the cave

23、and then fail to collect it. armed with the new machine, a search party went he did not like it. she enjoyed herself making the assistant bring almost everything in the window before finally buying the dress she had first asked for.   lesson58 a blessing in disguise? 是因祸得福吗？ the

24、tiny village of frinley is said to possess a 'cursed tree'. because the tree was mentioned in a newspaper, the number of visitors to frinley has now increased. the tree was planted near a church fifty years ago, but it is only in recent years that it has gained an evil reputation. it is said

25、 that if anyone touches the tree, he will have bad luck; if he picks a leaf, he will die. many villagers believe that the tree has already claimed a number of victims. the vicar has been asked to have the tree cut down, but so far he has refused. he has pointed out that the tree is a useful source o

26、f income as tourists have been coming from all parts of the country to see it. in spite of all that has been said, the tourists-have been picking leaves and cutting their names on the tree-trunk. so far, not one of them has been struck down by sudden death!   lesson59 in or out ？ 进来还是

27、出去？ our dog, rex, used to sit outside our front gate and bark. every time he wanted to come into the garden he would bark until someone opened the gate. as the neighbours complained of the noise, my husband spent weeks training him to press his paw on the latch to let himself in. rex soon becam

28、e an expert at opening the gate. however, when i was going out shopping last week, i noticed him in the garden near the gate. this time he was barking so that someone would let him out ! since then, he has developed another bad habit. as soon as he opens the gate from the outside, he comes into the

29、garden and waits until the gate shuts. then he sits and barks until someone lets him out. after this he immediately lets himself in and begins barking again. yesterday my husband removed the gate and rex got so annoyed we have not seen him since.      lesson60 the future 卜算未

30、来 at a village fair, i decided to visit a fortune-teller called madam bellinsky. i went into her tent and she told me to sit down. after i had given her some money, she looked into a crystal ball and said: 'a relation of yours is coming to see you. she will be arriving this evening and inte

31、nds to stay for a few days. the moment you leave this tent, you will get a big surprise. a woman you know well will rush towards you. she will speak to you and then she will lead you away from this place. that is all.' as soon as i went outside, i forgot all about madam bellinsky because my wife

32、 hurried towards me. 'where have you been hiding ?' she asked impatiently. 'your sister will be here in less than an hour and we must be at the station to meet her. we are late already.' as she walked away, i followed her out of the fair.    lesson61 trouble with the h

33、ubble 哈勃望远镜的困境 in future, astronauts will be required to descend from a spaceship while it is still in space and to return to it. the ability to do this will be necessary in future flights to distant planets. scientists are now trying to discover if this is possible. the spaceship astra which l

34、eft the earth a short time ago, will be travelling three hundred miles into space. at a certain point, the astra will stop for a short time and an astronaut will attempt to leave the stationary spaceship and then return to it. we shall not know whether the experiment has been successful until we hav

35、e received a radio message. the first message is expected to arrive at 7 o'clock this evening. by that time, the astra will have been flying through space for seventeen hours and will have circled the earth a great many times. when the first radio messages have been received, the results of the

36、trip will be announced immediately.   lesson62 after the fire 大火之后 firemen had been fighting the forest fire for nearly three weeks before they could get it under control. a short time before, great trees had covered the countryside for miles around. now, smoke still rose up from

37、 the warm ground over the desolate hills. winter was coming on and the hills threatened the surrounding villages with destruction, for heavy rain would not only wash away the soil but would cause serious floods as well. when the fire had at last been put out, the forest authorities ordered several t

38、ons of a special type of grass-seed which would grow quickly. the seed was sprayed over the ground in huge quantities by aeroplanes. the planes had been planting seed for nearly a month when it began to rain. by then, however, in many places the grass had already taken root. in place of the great tr

39、ees which had been growing there for centuries, patches of green had begun to appear in the blackened soil.    lesson63 she was not amused 她并不觉得好笑 geoffrey hampden has a large circle of friends and is very popular at parties. everybody admires him for his fine sense of humor-ever

40、ybody, that is, except his six-year-old daughter, jenny. recently, one of geoffrey's closest friends asked him to make a speech at a wedding reception. this is the sort of thing that geoffrey loves. he prepared the speech carefully and went to the wedding with jenny. he had included a large numb

41、er of funny stories in the speech and, of course, it was a great success. as soon as he had finished, jenny told him she wanted to go home. geoffrey was a little disappointed by this but he did as his daughter asked. on the way home, he asked jenny if she had enjoyed the speech. to his surprise, she

42、 said she hadn't. geoffrey asked her why this was so and she told him that she did not like to see so many people laughing at him!   lesson64 the channel tunnel 海峡隧道 in l858, a french engineer, aime thome de gamond, arrived in england with a plan for a twenty-one mile tunnel

43、across the english channel. he said that it would be possible to build a platform in the centre of the channel. this platform would serve as a port and a railway station. the tunnel would be well-ventilated if tall chimneys were built above sea-level. in 1860, a better plan was put forward by an化学工程

44、学院专业班学生xxx毕业设计（论文）任务书化学工程与工艺化工优0502毕业设计（论文）题目：年产5.5万吨环氧乙烷/乙二醇车间环氧乙烷合成工段工艺设计毕业设计（论文）内容：1、工艺流程设计2、物料衡算3、热量衡算4、设备计算毕业设计（论文）专题部分：氧化反应器脱轻组分塔指导教师：教研室主任：院 长：签字签字签字200920092009年年年月月月日日日5、带控制点工艺流程图my dentist had just pulled out one of my teeth and had told me to rest for a while. i tried to say something, bu

45、t my mouth was full of cotton-wool. he knew i collected birds' eggs and asked me whether my collection was growing. he then asked me how my brother was and whether i liked my new job in london. in answer to these questions i either nodded or made strange noises. meanwhile, my tongue was busy sea

46、rching out the hole where the tooth had been. i suddenly felt very worried, but could not say anything. when the dentist at last removed the cotton-wool from my mouth, i was able to tell him that he had pulled out the wrong tooth.    lesson49 the end of a dream 美梦告终 tired of slee

47、ping on the floor, a young man in teheran saved up for years to buy a real bed. for the first time in his life, he became the proud owner of a bed which had springs and a mattress. because the weather was very hot, he carried the bed on to the roof of his house. he slept very well for the first two

48、nights, but on the third night, a storm blew up. a gust of wind swept the bed off the roof and sent it crashing into the courtyard below. the young man did not wake up until the bed had struck the ground. although the bed was smashed to pieces, the man was miraculously unhurt. when he woke up, he wa

49、s still on the mattress. glancing at the bits of wood and metal that lay around him, the man sadly picked up the mattress and carried it into his house. after he  had put it on the floor, he promptly went to sleep again.   lesson50 taken for a ride 乘车兜风 i love travelling in

50、the country, but i don't like losing my way. i went on an excursion recently, but my trip took me longer than i expected.  ' i'm going to woodford green,' i said to the conductor as i got on the bus,' but i don't know where it is.' ' i'll tell you where to ge

51、t off,' answered the conductor.  i sat in the front of the bus to get a good view of the countryside. after some time, the bus stopped. looking round, i realized with a shock that i was the only passenger left on the bus.  ' you'll have to get off here,' the conductor

52、said. 'this is as far as we go.' ' is this woodford green ?' i asked. 'oh dear,' said the conductor suddenly.' i forgot to put you off.' 'it doesn't matter,' i said. 'i'll get off here.' 'we are going back now,' said the conductor. '

53、;well, in that case, i prefer to stay on the bus,' i answered.   lesson51 reward for virtue 对美德的奖赏 my friend, herbert, has always been fat, but things got so bad recently that he decided to go on a diet. he began his diet a week ago. first of all, he wrote out a long list of

54、all the foods which were forbidden. the list included most of the things herbert loves: butter, potatoes, rice, beer, milk, chocolate, and sweets. yesterday i paid him a visit. i rang the bell and was not surprised to see that herbert was still as fat as ever. he led me into his room and hurriedly h

55、id a large parcel under his desk. it was obvious that he was very embarrassed. when i asked him what he was doing, he smiled guiltily and then put the parcel on the desk. he explained that his diet was so strict that he had to reward himself occasionally. then he showed me the contents of the parcel

56、. it contained five large bars of chocolate and three bags of sweets!    lesson52 a pretty carpet 漂亮的地毯 we have just moved into a new house and i have been working hard all morning. i have been trying to get my new room in order. this has not been easy because i own over a thousa

57、nd books. to make matters worse, the room is rather small, so i have temporarily put my books on the floor. at the moment, they cover every inch of floor space and i actually have to walk on them to get in or out of the room. a short while ago, my sister helped me to carry one of my old bookcases up

58、 the stairs. she went into my room and got a big surprise when she saw all those books on the floor. 'this is the prettiest carpet i have ever seen,' she said. she gazed at it for some time then added, 'you don't need bookcases at all. you can sit here in your spare time and read the

59、 carpet!'    lesson53 hot snake 触电的蛇 at last firemen have put out a big forest fire in california. since then, they have been trying to find out how the fire began. forest fire are often caused by broken glass or by cigarette ends which people carelessly throw away. yesterday

60、 the firemen examined the ground carefully, but were not able to find any broken glass. they were also quite sure that a cigarette end did not start the fire. this morning, however, a fireman accidentally discovered the cause. he noticed the remains of a snake which was wound round the electric wire

61、s of a 16,000-volt power line. in this way, he was able to solve the mystery. the explanation was simple but very unusual. a bird had snatched up the snake from the ground and then dropped it on to the wires. the snake then wound itself round the wires. when it did so, it sent sparks down to the gro

62、und and these immediately started a fire.   lesson54 sticky fingers 粘糊的手指 after breakfast, i sent the children to school and then i went to market. it was still early when i returned home. the children were at school, my husband was at work and the house was quiet. so i decided to make some tarts for tea. in a sh